TW200523111A - Tear resistant peelable seal for containers - Google Patents

Tear resistant peelable seal for containers Download PDF

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Publication number
TW200523111A
TW200523111A TW93132514A TW93132514A TW200523111A TW 200523111 A TW200523111 A TW 200523111A TW 93132514 A TW93132514 A TW 93132514A TW 93132514 A TW93132514 A TW 93132514A TW 200523111 A TW200523111 A TW 200523111A
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TW
Taiwan
Prior art keywords
layer
polymer
sealing structure
item
scope
Prior art date
Application number
TW93132514A
Other languages
Chinese (zh)
Other versions
TWI361754B (en
Inventor
Steven R Cosentino
Stephen K Franzyshen
Original Assignee
Dupont Teijin Films Us Ltd
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Publication of TW200523111A publication Critical patent/TW200523111A/en
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Publication of TWI361754B publication Critical patent/TWI361754B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/16—Snap-on caps or cap-like covers
    • B65D41/18—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2272/00—Resin or rubber layer comprising scrap, waste or recycling material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2581/00—Seals; Sealing equipment; Gaskets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y10T428/1359—Three or more layers [continuous layer]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1362—Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31565—Next to polyester [polyethylene terephthalate, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31569—Next to natural rubber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/109—Metal or metal-coated fiber-containing scrim
    • Y10T442/124—Including a natural or synthetic rubber layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/109—Metal or metal-coated fiber-containing scrim
    • Y10T442/126—Including a preformed film, foil, or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)

Abstract

A tear resistant seal made from a recyclable multilayer structure that consists of an oriented polymer film layer and a thermal bonding polymer layer on the oriented polymer layer inner surface substantially coextensive thereto, and a reinforcing scrim polymer also having an inner surface adjacent and substantially coextensive with the thermal bonding polymer layer. The polymer film layer and the bonding polymer layer are co-extruded layers having a chemical composition that permits recycling without separating the layers. The scrim layer also has a similar chemical composition, permitting recycling following lamination, thereby permitting the recovery of waste material during production runs by the simple recycling of the complete laminated structure.

Description

200523111 15192pif.doc 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種密封結構，且特別是有關於一種 可循環利用（recyclable)之使用多層結構的耐撕裂及可剝離 的密封蓋子（lid)。 【先前技術】 一般而言，一種由多層材料所構成之薄片，係常用以 將一容器之開口封住，以防止外界之空氣與污染物進入容 裔内。一典型的密封結構係包含一金屬箔之薄片，此薄片 係包含一種熱密封材料(heat sealable material)之薄膜，其用 以將該金屬箔接合於一容器的邊緣上，舉例來說，其例如 為一塑膠盤型式(plastic tray type)之食物包裝，一瓶子 (bottle)或一泡形包裝(biister package)。當此密封結構欲密 封住一瓶子時，其係藉由熱而密封住此容器的邊緣，其中 此密封結構係由一多層材料所構成的薄板經過壓裁 (die-cut)而成。當用於容器之包裝為泡形包裝㈨以以 package)之類型時，其於大的薄片上具有孔洞。密封結構 通常係以下列之方式呈現，例如以_薄片延伸並覆蓋住此 泡形型式包裝(blister type package)之開口或者是覆蓋住這 些泡形所形成之陣列。塑膠之食物容置盤⑼她_ con— trays)因時常需要烹煮或加熱的緣故，狀 包含金屬。此_之食物容魏在密封結構時的厚度 比傳統之獅包裝之厚度，其中此泡形包裝具有一頂 部邊緣(top hp)，此邊緣之一小表面係可移除地用以貼附於 200523111 15192pif.doc 一蓋子，以密封此包裝。 密封結構與蓋、 構之用缕^有一標籤(tat0，其係由該密封結 構之周、拍外延伸，使得 地將此容H上之呜作❹入 住&紙而輕易 泡形包Μ，除。另外，當此密封結構為一 edSeW二 結構之邊緣可具有多數侧痕(scored 〜I 口移除此密封結構所需的抓取力(grip)。 ^ 包I的例子而言’此密封結構可當作該泡形包 ㈣之科（亦即外部密封型式），或者是此密封 口 — β ；具有螺紋之頸部(threaded neck)及一有螺紋 之^子的谷③内（亦㈣部密封型式）。此内部密封結構 通韦由^述之金屬箱之多層薄片經壓裁(die-cut)而成，其中 ^金屬箔具有一熱密封(heat sealable)材料層。然後，一内 密封結構係置人此蓋子内，且該蓋何旋卿wisted)並固 定於此容器之頸部上。之後，加熱此被蓋住之容器，進而 讓熱傳遞至此鋁箔，使得此熱密封材料層熔化，而讓此内 岔封結構可接合於(bonded)此容器。 不論是用以密封泡形包裝或者是容器之瓶口，此密封 結構仍舊必需考量到耐撕裂之設計，包括耐咬(bitting)等 等，尤其是為了有效地防止幼兒咬開此包裝，而任意地拿 取或吃下其内容物，此耐咬設計是非常重要的。 用於製作此可剝離之密封結構的材料包括雙軸定向 (biaxially oriented)之聚酯層(polyester film)，例如為其上覆 蓋著一非晶型(amorphous)之熱密封聚酯層之Mylar®等。此 密封結構更可包括一印刷標誌(printed indica)，位於此 200523111 15192pif.doc200523111 15192pif.doc IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a sealing structure, and more particularly to a recyclable tear-resistant and peelable seal using a multilayer structure Lid. [Prior art] Generally speaking, a sheet made of multiple layers of material is often used to seal the opening of a container to prevent outside air and pollutants from entering the dwelling. A typical sealing structure includes a thin sheet of metal foil, which is a thin film of a heat sealable material that is used to join the metal foil to the edge of a container, for example, such as It is a plastic tray type food package, a bottle or a biister package. When the sealing structure is to seal a bottle tightly, it seals the edge of the container by heat, wherein the sealing structure is formed by die-cutting a thin plate made of a multi-layer material. When the packaging used for the container is a blister type (package type), it has holes in a large sheet. The sealing structure is usually presented in the following manner, for example, it is extended by a sheet to cover the opening of the blister type package or an array formed by covering these blister types. Plastic food trays (con_ trays) contain metal because they often need to be cooked or heated. The thickness of this food Rongwei in the sealed structure is thicker than the thickness of the traditional Lion packaging. The blister packaging has a top edge (top hp). 200523111 15192pif.doc A lid to seal the package. The seal structure, cover, and structure have a label (tat0), which extends from the periphery of the seal structure and shoots outside, so that the contents of this volume H can be used as a dwelling paper, and it can be easily bubble-shaped. In addition, when the seal structure is an edSeW structure, the edges of the structure can have most side marks (scored ~ I). The grip required to remove the seal structure (grip). ^ For the example of package I, this seal The structure can be regarded as the branch of the bubble-shaped bag (that is, the external sealing type), or the sealing mouth-β; a threaded neck and a threaded valley ③ inside (also ㈣ The internal sealing structure Tongwei is formed by die-cutting the multilayer sheets of the metal box described above, wherein the metal foil has a heat sealable material layer. Then, one inner The sealing structure is placed in the lid, and the lid is wisted and fixed on the neck of the container. After that, the covered container is heated to allow heat to be transferred to the aluminum foil to make the heat-sealing material layer Melting, so that the inner bifurcated structure can be bonded to the container. Whether it is used to seal the blister package or the bottle mouth of the container, the sealing structure must still consider the design of tear resistance, including bitting resistance, etc., especially to effectively prevent young children from biting the package, and The bite-resistant design is very important to take or eat its contents arbitrarily. Materials used to make this peelable seal structure include a biaxially oriented polyester film, such as It is covered with an amorphous heat-sealable polyester layer such as Mylar®, etc. The sealing structure may further include a printed indica at 200523111 15192pif.doc

Mylar®層之外露的表面。一第二熱密封聚酯之Myiar®層更 可復蓋於此彳示遠上。相反地，具有一顛倒的(reverse(j)印刷 標誌於一第二My 1 ar®層之一表面係可貼附於此密封結構 之上表面，使得此印刷標誌可適當地定向(pr〇perly 〇riented) 並受到Mylar®層之保護。 其他常見的結構包括Mylar®RL43，其覆蓋著一乙稀 系醋酸鹽（ethylene vinyl acetate，EVA)之熱活化密封物 (heat activated seal)，以作為一種可剝離之密封結構 (peelable seal)。根據上述之理由，蓋子之密封結構必須具 有而ί撕裂之特性’尤其是在其剝離之過程中。此外，對於 防水或防水蒸氣或财熱之密封結構設計亦需加以考量，尤 其是當容器内的食物需要加熱時，或者是要在其外露之表 面上印刷時，或者是考量到壓低製造成本時。另外，亦必 須考量到此密封結構之構成材料在後續處理上之環保問 題0 由Han所發明並讓渡於3Μ公司之美國專利第 5,372,268號係揭露一用於熱密封結構之多層結構。此結構 包括(a)—密封材料層，以將此密封結構接合於此容器上， (b)—阻絕空氣及水蒸氣穿透之膜層，以及(c)一強化材料層 (reinforcing material)。此密封材料層可由任何適當的黏著 劑所構成，例如為一熱密封膜層(heat sealable film)、一熱 炫化黏著劑(hot melt adhesive)、不黏著壓力活化黏著劑 (tack-free pressure activated adhesive)或者是一剪活化黏著 劑（shear-activated adhesive)等。此非滲透層（impermeable 200523111 15192plf.doc layer)可由聚合體膜(polymeric film)所構成，例如為聚氣乙 烯(poly(vinyl chloride))或金屬箔(例如為鋁箔等）。此強化 層為一多層膜，包含至少兩層之單軸定向膜(monoaxially oriented films)，其中一層之單軸定向膜之較強方向(strong direction)與另一層之單軸定向膜之較弱方向（weak direction)係相互交叉而共同壓合(laminated)而成，而讓所 有方向之力里肖b夠一致’使得在加工方向（machine direction)、交叉方向（cross direction)與對角方向（diag0nai direction)之撕裂力量(tear)與張力(tesile)能夠增加。 此禋便用相異之化學材料以形成一密封結構，進而增 加最終產品之厚度與剛度(stiffness)的方式，在習知技術^ 係已揭露。為了滿足上述之密封結構材質所需的材料特 性，此種增加多種材料層的使用數目之方式將會讓其所需 之製程步驟複雜化，進而提高其製造成本。更特殊的是而 在製造過程中所產生之㈣廢物，以及形成此密封結構 需的網具(webs)在處理上皆是—個相當大的問題。然而， 要製造出具有高耐·以及防水絲氣之祕的贫封沾 3 ’則必須使用網具(webs)，故此問題係相當地令；/ ，此，仍㈣要開發—種可用於密封 ^ 之材料，使得此蓋子可具有高度之耐= "可方便地將此密騎構㈣地密封於此蓋子上。 200523111 15192plf.doc 【發明内容】 本發明係提出一種用於密封容器之密封結構，此密封 結構係由耐撕裂之多層結構所構成，在使用此密封結構 時’可有效地防止戳破或撕裂此密封結構，此密封結構包 括： a) —定向聚合物膜層（oriented polymer film layer)，具 有一頂面與一内面； b) —熱接合聚合物層(thermal bonding polymer)，係實 質上地(substantially)共延伸（coextensive)於此定向聚合物 膜層的内面上，其中此熱接合聚合物層具有一厚度，此厚 度係為定向聚合物膜層與熱接合聚合物層之一共同接合厚 度之10%至40% ;以及 c) 一 強化聚合物層(reinforcing scrim polymer layer)，具 有一内面與一底面，其中此内面係實質上地共延伸 (coextensive)於此熱接合聚合物層。 根據本發明較佳實施例所述之密封結構，其中定向聚 合物膜層與熱接合聚合物層為共擠製之膜層（co-extruded layers)，其具有一化學成分，可讓此膜層在毋須分開的情 況下就可重複地利用。強化聚合物層亦具有一類似之化學 成分’亦可重複地使用其後續之堆疊層（following lamination)。當此完整之壓疊結構(laminated structure)在重 複地使用(recycling)下，這些材料的選擇將可讓廢料復原 (recovery of waste material)。在本發明中，所謂「重複地使 用（recycling)」乃是指在相同或相似的製程下，重複利用 200523111 15192pif.doc (reuse)材料的能力。至於「重複利用的能力」乃是指當使 用此重複利用（recycled)之材料時，其可重複利用之材料的 重量佔了整個成品重量之20%〜70%。舉例而言，在生產運 作中所產生之聚酯廢料將可被撕裂(shredded)，然後藉由— 球擠製機(palletizing extruder)而製成多數個回收之球丸 (recycled pallets)以再利用（reuse)。此可循環利用（recycled) 之聚酯球(polyester pellets)可混合未經加工處理的（fresh) 或者是未摻雜的(virgin)聚酯聚合物(p〇iyester p〇iymer)，而 這些再熔化(re-melted)與再擠製(re-extruded)之材料將可製 造出一定向膜(oriented film)或其他產品。 一熱活化(thermally activated)黏著層係可覆蓋於此強 化5^合物層之底面上，以提供此密封結構貼附於一容器開 口所需的黏著力。 根據本發明較佳實施例所述之密封結構，其中此熱接 合聚合物層以及此強化聚合物層係分別包括一合成濃縮聚 合物(synthetic condensation polymer)，其中每一合成濃縮 λΚ合物包括多個聚合物型式(polymerized form)，例如為： a)—羧酸(carboxylic acid)或者是一羧酸的混合物，以 及〇一二氨(diamine)或者是一二氨之混合物，或者是⑴一 醇類或一醇類之混合物等，或者是 氨基酸(amino acid)，其具有超過2個碳原子， 或者是一氨基酸之混合物等， 七〜其中當這些聚合物之其中之一係全部地構成此合成 農縮聚合物時，這些聚合物分別包括： 11 200523111 15l92pif.doc (1) 至少90mol%之羧酸(carboxylic acid)或者是此合成 濃縮聚合物與魏酸(carb oxy 1 i c acid)混合物的結合總量為相 同之羧酸； (2) 至少90mol%之二氨(diamine)或者是此合成濃縮聚 合物與二氨(diamine)混合物的結合總量為相同之二氨； (3) 至少90mol%之醇類(diols)或者是此合成濃縮聚合 物與醇類(diols)混合物的結合總量為相同之醇類； (4) 至少90mol%之氨基酸(amino acid)或者是此合成濃 縮聚合物與氨基酸(amino acid)混合物的結合總量為相同 之氨基酸； 此定向聚合物膜層可包含雙軸定向之聚對苯二甲酸 乙酯(polyethylene terephthalate, PET)。 根據本發明較佳實施例所述之密封結構，其中可使用 一熱活化(thermally activated)之黏著層而將此強化聚合物 層之底面配置於一容器之開口，例如為瓶口或者是一泡形 包裝之頂側、開口側等，以可隨時將此密封結構自容器處 剝離(pealing)。 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 【實施方式】 以下為本發明之較佳實施例，其係以配合多數個示意 圖來，述，其中每-示意圖中之相同的標號乃是代表相同 的特徵。這些示意圖僅是用來方便說明並解釋本發明，所 12 200523111 15l92plf.doc 以並不是用於實際製程中的工程圖，並且未依照實際製程 寺比例放大。此外，某些元件係部分地顯示於或者是並未 顯不於本發明之示意圖中，就可以瞭解本發明。 圖1繪示為依據本發明較佳實施例之一種多層密封 結構的剖面示意圖。請參照圖i，此密封結構包含至少三 個膜層。至於額外的膜層係可能位於此三膜層之上方或者 是下方，而在本實施例中，只要此三膜層就可以解釋本發 明，故這些額外的膜層並未繪示於本實施例之示意圖中。 此三膜層乃是構成此密封結構之抗撕裂部分，其分別為一 頂層（top layer)12，一接合之聚合物層18以及一強化之聚 合物層（reinforcing scrim layer)20。 頂層12為一定向聚合物膜(oriente(jp〇iymerfiim)，其 由一線性聚酯(linear p〇lyester)所構成。一般而言，此線性 聚酯之黏滯度係介於〇·5〜〇·8之間，常見者為0.6。其中， 較佳之聚醋膜包含雙軸定向(biaxiaiiy orientecj)之聚對苯二 曱酸乙酯(polyethylene terephthalate，PET)膜以及雙軸定向 (biaxially oriented)之聚對荼二曱酸乙二酯（p〇iyethylene naphthalate，PEN)膜。 當聚對苯二曱酸乙g旨(polyethylene terephthalate，PET) 經雙軸定向及熱固後(heat set)將會變得很有用，至於此種 聚對苯二甲酸乙酯(PET)材料在習知技藝中已充分揭露（例 如為美國專利第4,375,494號）。 至於此聚對苯二曱酸乙酯(PET)之聚合物製程係已揭 露於習知技藝與許多文獻中，例如由紐約之威利出版社 13 200523111 15192plf.doc (Wiley)所出版之「聚合物科技與工程之專書(Encyd〇pedia of Polymer Science and Engineering)」的第二版(2nd· Ed.)之 第12期(Vol· 12)的第1頁〜第313頁。此聚合物可藉由凝 結(condensing)適當的二羧酸(dicarb〇xylic acid)或者是烷二 酯（alkyl diester)及乙二醇(ethylene glycol)所製成。聚對苯 二甲酸乙酯(PET)可由對苯二甲酸(terephthalic acid)或者是 對苯二甲酸酯（ester)所製成。聚對荼二曱酸乙二醋 (polyethylene naphthalate，PEN)可由 2,二羧酸或者是 2,7- 二羧酸酯(ester)所製成。 頂層12之定向聚合物膜可包含一微小的添加物 (particulate additive)，以改善產品之外觀或者是改變複合 硬紙板(composite paperboard)結構對於水蒸氣或其他氣體 之滲透率(permeability)。在本發明之一較佳實施例中，一 包含此微小的添加物(particulate additive)之膜層為一雙車由 定向之聚對苯二曱酸乙酯（polyethylene terephthalate， PET) ’其包括大約15%之二氧化欽，此聚合物在市面上稱 為密拉（Mylar®)365T，係由 Dupont Teijin Films of Wilmington，DE·公司所製造。另一種為Melinex® 389之聚 合物’其包含一紫外線吸收劑(UV absorber)。在一較佳實 施例中，其他微小的添加物(particulate additive)之種類例 如為防燃劑(flame retardant additive)，其包含黏土(ciay)、 滑石（talc)與石夕石（silica)等。由於這些添加物之使用量非常 小，因此，可回收製造此聚合物時所留下之廢料(waste product) ° 200523111 15192pif.doc 頂層12之定向聚合物膜具有一頂面14與一内面16。 貼附於(adhered to)内面16為一熱接合之聚合物層(thermal bonding polymer layer)18。此熱接合之聚合物層（thermal bonding polymer layer) 18 可於此定向（oriented)之頂層 12 與 一強化之聚合物層（scrim polymer layer)20之間形成一黏著 力（adhesive bond)。簡要而言，此熱接合之聚合物層18係 形成於此内面16之表面(其中此内面16為一定向的聚合物 層），以形成一複合物薄膜(film composite)。接著，可藉由 施加壓力、溫度於此熱接合之聚合物層18，以軟化此熱接 合之聚合物層18，使得複合物可強化此聚合物層（scrim polymer layer)20，其中此施加的溫度或壓力將不會讓此内 面16或聚合物層20軟化或熔化。 此熱接合之聚合物層18可包含一聚醋樹脂(polyester resin)，尤其是共聚酯樹脂(co p〇iyester resin)，其由一或多 個二元芳香族羧酸(dibasic aromatic carboxylic acids)，例如 包含對苯二酸(terephthalic acid)，間苯二曱酸(isophthalic acid)及六氫對苯二酸(hexahydroterephthalic acid)等，或者 是包含一或多個醇類（glycols)，例如為乙二醇(ethylene glycol)、二甘醇（diethylene glycol)、三甘醇（triethylene glycol)與新戊二醇(ne〇pentyl glyC〇l)等。熱接合之聚合物層 18 可包含一對苯(terephthalate)之聚酯(polyester)。一較佳 之共聚酯（co polyester)結構係由對苯二酸（terephthalic acid)、一或兩個間苯二曱酸(iSOphthalic acid)、六氫對苯二 酸(hexahydroterephthalic acid)以及一或多個醇類（尤其是 15 200523111 15192pif.doc 乙二醇(ethylene glycol))所構成。在一較佳實施例中，共 聚酯(co poly ester)結構於非晶型狀態中（amorphous state)可 提供對苯乙稀（ethylene terephthalate)與異苯二曱乙烯 (ethylene isophthalate)較佳的接合性質（bonding properties)，尤其是當對苯乙烯(ethylene terephthalate)之莫 爾比率(molar ratios)為60mol%至90 mol%以及異苯二曱乙 稀(ethylene isophthalate)之莫爾比率為 40mol〇/〇至 lOmol% 時。在一較佳實施例中，共聚酯(co polyester)結構可分別 包含 70mol%至 85mol%的對苯乙稀(ethylene terephthalate) 以及30mol%至15mol%的異苯二曱乙稀（ethylene isophthalate)，舉例而言，此共聚酯(co polyester)結構可包 含 82 mol% 的對苯乙稀（ethylene terephthalate)以及 18 mol%的異苯二曱乙稀(ethylene isophthalate)。 根據本發明較佳實施例所製造之密封結構，可同時提 供定向的頂層12與熱接合之聚合物層18，以形成一較佳 的複合材料層之厚度，其厚度範圍由0.20 mill至3 mill(毫 英吋），更佳的厚度為〇.50mill至1.4mill。 在本發明之較佳實施例中，此定向的頂層12為一雙 軸定向之聚對苯二曱酸乙酯（polyethylene terephthalate， PET) ’且此熱接合之聚合物層18為如上所述之共聚酯樹 脂(co polyester resin)。此複合材料膜(film composite)可方 便地藉由一具有多個孔洞（orifice)之模子(die)以進行多重 擠製（extrusion)製程所形成。或者是如美國專利第 3,871，947號所提到的，以一或多方向之分子定向 16 200523111 15192pif.doc (molecular orientation)而延伸並熱固（heat setting)以進行這 些複合材料層之共擠製(CO extrusion)製程，而一般能夠較 方便地進行此共擠製(co extrusion)及其所需之設備為一單 通道(single channel)之共擠製製程，其係揭露於美國專利第 4,165，210號。此方法係包含同時地由兩不同的擠壓條 (extruders)擠製出第一與第二聚酯(p〇lyester)條，並將此第 一與第二聚酯條配置於(united) —管子(tube)内，並導入 (leading)—擠製模(extrusion die)之一歧管(manifold)内，且 以流線型之方式而將此兩聚酯(polyester)條經由此擠製模 而擠出，使得此兩聚酯（polyester)條將不會相互混合 (intermixing)，以完成此複合材料膜（film composite)之製 作。 由複合材料膜之聚合物層所定向之雙軸定向之聚對 苯二曱酸乙醋(polyethylene terephthalate，PET)的製作，係 可在78 QC至125°C之溫度範圍下，藉由連續地以兩相互 垂直的方向來拉伸(stretch)此複合材料而完成。一般而言， 此種用於拉伸聚合物之情況(conditions)係可將此熱接合之 聚合物層部分地結晶化。在部分的案例中，在尺寸的限制 (dimension restraint)之下，當溫度高於此熱接合之聚合物層 的結晶炼點溫度(crystalline melting temperature)，但低於由 聚合物層所定向之聚對苯二甲酸乙醋(PET)的結晶溶點溫 度(crystalline melting temperature)時，對於熱固化(heat set) 此複合物膜的效果是較佳的。然後，當此定向之聚合物膜 層内具有高結晶度(crystallinity)時，可冷卻此複合物’以 17 2〇〇52狐 形成一非晶型(amorphous)的熱接合之聚合物層。因此，在 尺寸的限制(dimension restraint)之下，此熱固（heatsetting)The exposed surface of Mylar® layer. A second heat-sealable polyester layer of Myiar® can be applied over this display. In contrast, a surface with a reverse (j) printed logo on a second My 1 ar® layer can be attached to the upper surface of the sealing structure so that the printed logo can be properly oriented (prOperly 〇riented) and protected by the Mylar® layer. Other common structures include Mylar® RL43, which is covered with a heat activated seal of ethylene vinyl acetate (EVA) as a Peelable seal. According to the above reasons, the sealing structure of the lid must have the characteristics of tearing, especially in the process of peeling. In addition, the sealing structure is waterproof or waterproof vapor or financial heat. The design also needs to be considered, especially when the food in the container needs to be heated, or when it is printed on its exposed surface, or when the manufacturing cost is reduced. In addition, the material of the sealing structure must also be considered Environmental issues in subsequent treatment 0 US Patent No. 5,372,268, invented by Han and transferred to 3M Company, discloses a multilayer structure for heat-sealed structures. The structure includes (a) a layer of sealing material to attach the sealing structure to the container, (b) a film layer that blocks air and water vapor from penetrating, and (c) a reinforcing material layer. The sealing material layer may be composed of any suitable adhesive, such as a heat sealable film, a hot melt adhesive, and a tack-free pressure activated adhesive. ) Or a shear-activated adhesive, etc. This impermeable layer (impermeable 200523111 15192plf.doc layer) may be composed of a polymeric film, such as poly (vinyl chloride) ) Or metal foil (for example, aluminum foil, etc.). This reinforcing layer is a multilayer film including at least two layers of monoaxially oriented films. One of them has a stronger direction. The weak direction of the uniaxially oriented film on the other layer is formed by intersecting with each other and being laminated together, so that the forces in all directions are consistent with each other. (Machine direction), cross direction (cross direction) to the tear strength in the diagonal direction (diag0nai direction) of (Tear) tension (tesile) can be increased. In this way, the use of dissimilar chemical materials to form a sealed structure, thereby increasing the thickness and stiffness of the final product, has been disclosed in the conventional technology ^. In order to meet the material characteristics required for the above-mentioned sealing structure materials, this method of increasing the number of used multiple material layers will complicate its required process steps, thereby increasing its manufacturing cost. What's more special is that the plutonium waste generated in the manufacturing process and the webs required to form this sealed structure are both a considerable problem in handling. However, in order to produce a lean seal 3 'with high resistance and the secret of waterproof silk, it is necessary to use webs, so the problem is quite order; /, therefore, still need to develop-a kind can be used for sealing ^ Material, so that the lid can have a high degree of resistance = " It can be easily sealed on the lid. 200523111 15192plf.doc [Summary of the invention] The present invention proposes a sealing structure for sealing a container. The sealing structure is composed of a multilayer structure that is resistant to tearing. When used, the sealing structure can effectively prevent puncture or tearing. The sealing structure is cracked. The sealing structure includes: a) an oriented polymer film layer having a top surface and an inner surface; b) a thermal bonding polymer layer, which is essentially Substantially coextensive on the inner surface of the oriented polymer film layer, wherein the heat-bonded polymer layer has a thickness that is a joint between the oriented polymer film layer and one of the heat-bonded polymer layers 10% to 40% of thickness; and c) a reinforcing scrim polymer layer having an inner surface and a bottom surface, wherein the inner surface is substantially coextensive with the thermally bonded polymer layer. According to the sealing structure according to the preferred embodiment of the present invention, the oriented polymer film layer and the heat-bonded polymer layer are co-extruded layers, which have a chemical composition that allows the film layer Reusable without separation. The reinforced polymer layer also has a similar chemical composition ' and its subsequent following lamination can be reused. When this complete laminated structure is reused, the selection of these materials will allow the recovery of waste material. In the present invention, the so-called "recycling" refers to the ability to reuse 200523111 15192pif.doc (reuse) materials under the same or similar processes. The “recycling capacity” means that when this recycled material is used, the weight of the recyclable material accounts for 20% to 70% of the weight of the entire finished product. For example, the polyester waste generated in the production operation can be shredded and then recycled into a plurality of recycled pallets by a ballizing extruder Reuse. These recycled polyester pellets can be blended with fresh or virgin polyester polymers (p〇iyester p〇iymer), and these Re-melted and re-extruded materials will make oriented films or other products. A thermally activated adhesive layer can cover the bottom surface of the reinforced composite layer to provide the adhesion required for the sealed structure to be attached to the opening of a container. The sealing structure according to a preferred embodiment of the present invention, wherein the thermally-bonded polymer layer and the reinforced polymer layer respectively include a synthetic condensation polymer, wherein each synthetic concentrated λK compound includes a polycondensation polymer. A polymerized form, for example: a) —carboxylic acid or a mixture of monocarboxylic acids, and diamine or a mixture of diamines, or fluorinated alcohol Or a mixture of alcohols, or amino acids, which have more than 2 carbon atoms, or a mixture of amino acids, etc., where one of these polymers all constitutes this synthesis In agricultural shrink polymers, these polymers include: 11 200523111 15l92pif.doc (1) at least 90 mol% of carboxylic acid or a combination of this synthetic concentrated polymer and carb oxy 1 ic acid The total amount is the same carboxylic acid; (2) At least 90 mol% of diamine or the combined total of the synthetic concentrated polymer and the diamine is the same diamine; ( 3) At least 90 mol% of diols or the total combined amount of the synthetic concentrated polymer and diols mixture is the same; (4) At least 90 mol% of amino acids or this The total combined amount of the synthetic concentrated polymer and the amino acid mixture is the same amino acid; the oriented polymer film layer may include biaxially oriented polyethylene terephthalate (PET). According to the sealing structure of the preferred embodiment of the present invention, a thermally activated adhesive layer can be used to arrange the bottom surface of the reinforced polymer layer at the opening of a container, such as a bottle mouth or a bubble. The top side, open side, etc. of the packaging are shaped so that the sealed structure can be peeled from the container at any time. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, preferred embodiments are described below in detail with reference to the accompanying drawings, as follows. [Embodiment] The following is a preferred embodiment of the present invention, which is described in conjunction with a plurality of schematic diagrams, wherein the same reference numerals in each diagram represent the same features. These diagrams are only for the convenience of explaining and explaining the present invention. Therefore, the 20052005111111 15l92plf.doc is not an engineering drawing used in the actual process, and is not enlarged according to the actual process scale. In addition, the present invention can be understood by showing some elements partially or not in the schematic diagram of the present invention. FIG. 1 is a schematic cross-sectional view of a multilayer sealing structure according to a preferred embodiment of the present invention. Please refer to Figure i. This sealing structure contains at least three layers. As for the additional film layer may be located above or below the three film layers, in this embodiment, as long as the three film layers can explain the present invention, these additional film layers are not shown in this embodiment. In the schematic. The three film layers are the tear-resistant parts of the sealing structure, which are a top layer 12, a bonded polymer layer 18, and a reinforced scrim layer 20, respectively. The top layer 12 is an oriented polymer film (oriente (jp〇imerfiim)), which is composed of a linear polyester (linear polyester). Generally, the viscosity of this linear polyester is between 0.5 and 5 0.8, the common one is 0.6. Among them, the preferred polyethylene film includes biaxially oriented (biaxiaiiy orientecj) polyethylene terephthalate (PET) film and biaxially oriented Polyethylene naphthalate (PEN) film. When polyethylene terephthalate (PET) is biaxially oriented and heat set, Has become very useful, as such polyethylene terephthalate (PET) materials have been fully disclosed in the art (for example, US Patent No. 4,375,494). As for this polyethylene terephthalate (PET) The polymer manufacturing process has been disclosed in conventional techniques and many literatures, such as the "Encydopepedia of Polymer Science" published by Willy Press, New York, 13 200523111 15192plf.doc (Wiley). and Engineering) "(2nd Ed.) Vol. 12 (Vol. 12), page 1 to page 313. This polymer can be condensed by appropriate dicarboxylic acid or alkyl diester and ethylene diethylene glycol. Alcohol (ethylene glycol). Polyethylene terephthalate (PET) can be made of terephthalic acid (terephthalic acid) or terephthalate (ester). Polyethylene terephthalate Diethylene naphthalate (PEN) can be made of 2, dicarboxylic acid or 2,7- dicarboxylic acid ester. The oriented polymer film of the top layer 12 can contain a tiny additive, In order to improve the appearance of the product or change the permeability of the composite paperboard structure to water vapor or other gases. In a preferred embodiment of the present invention, a micro additive is included. ) The film layer is a pair of car-oriented polyethylene terephthalate (PET) 'It includes about 15% of dioxin, this polymer is called Mylar® in the market 365T, by Dupont Teijin Films of Wilmington, D Manufactured by E · company. The other polymer is Melinex® 389, which contains a UV absorber. In a preferred embodiment, the type of other minute additives is, for example, a flame retardant additive, which includes ciay, talc, and silica. Because the amount of these additives used is very small, the waste product left during the manufacture of this polymer can be recycled. 200523111 15192pif.doc The oriented polymer film of the top layer 12 has a top surface 14 and an inner surface 16. Adhered to the inner surface 16 is a thermal bonding polymer layer 18. The thermal bonding polymer layer 18 can form an adhesive bond between the oriented top layer 12 and a strengthened polymer layer 20. Briefly, the thermally-bonded polymer layer 18 is formed on the surface of the inner surface 16 (wherein the inner surface 16 is a directional polymer layer) to form a film composite. Then, the thermally bonded polymer layer 18 can be softened by applying pressure and temperature to the thermally bonded polymer layer 18 so that the composite can strengthen the scrim polymer layer 20, where the applied Temperature or pressure will not soften or melt this inner surface 16 or polymer layer 20. The thermally-bonded polymer layer 18 may include a polyester resin, especially a copolyester resin, which is composed of one or more dibasic aromatic carboxylic acids. ), Such as terephthalic acid, isophthalic acid, and hexahydroterephthalic acid, or one or more alcohols, such as Ethylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, neopentyl glycol, etc. The thermally bonded polymer layer 18 may include a pair of terephthalate polyester. A preferred co polyester structure is composed of terephthalic acid, one or two iSOphthalic acid, hexahydroterephthalic acid, and one or more Alcohols (especially 15 200523111 15192pif.doc ethylene glycol). In a preferred embodiment, the copolyester structure in an amorphous state can provide better ethylene terephthalate and ethylene isophthalate. Bonding properties, especially when the molar ratios to ethylene terephthalate are 60 mol% to 90 mol% and the molar ratio of ethylene isophthalate is 40 mol. / 〇 to 10mol%. In a preferred embodiment, the co polyester structure may include 70 mol% to 85 mol% of ethylene terephthalate and 30 mol% to 15 mol% of ethylene isophthalate. For example, the co polyester structure may include 82 mol% ethylene terephthalate and 18 mol% ethylene isophthalate. The sealing structure manufactured according to the preferred embodiment of the present invention can provide an oriented top layer 12 and a thermally bonded polymer layer 18 at the same time to form a preferred thickness of the composite material layer. The thickness ranges from 0.20 mill to 3 mill. (Milli-inches), and a more preferable thickness is 0.50 to 1.4 millimeters. In a preferred embodiment of the present invention, the oriented top layer 12 is a biaxially oriented polyethylene terephthalate (PET) ′ and the thermally bonded polymer layer 18 is as described above. Co polyester resin. The film composite can be conveniently formed by a die having a plurality of orifices to perform a multiple extrusion process. Or, as mentioned in U.S. Patent No. 3,871,947, the molecular orientation of one or more directions 16 200523111 15192 pif.doc (molecular orientation) is extended and heat set to coextrusion of these composite material layers (CO extrusion) process, and it is generally easier to carry out this co extrusion and the equipment needed for it is a single channel co-extrusion process, which is disclosed in US Patent No. 4,165 , No. 210. The method includes simultaneously extruding first and second polyester strips from two different extruders, and arranging the first and second polyester strips in united — Into the tube and into a manifold of a leading-extrusion die, and streamline the two polyester strips through the extrusion die in a streamlined manner As a result, the two polyester strips will not be intermixed with each other to complete the production of the film composite. The biaxially oriented polyethylene terephthalate (PET) is oriented by the polymer layer of the composite material film, and can be continuously operated at a temperature range of 78 QC to 125 ° C. This composite material is stretched in two mutually perpendicular directions to complete. In general, such conditions for stretching polymers can partially crystallize this thermally bonded polymer layer. In some cases, under the dimension restraint, when the temperature is higher than the crystalline melting temperature of the thermally bonded polymer layer, but lower than the polymer oriented by the polymer layer At the crystalline melting temperature of ethyl terephthalate (PET), the effect of heat setting the composite film is better. Then, when the oriented polymer film layer has high crystallinity, the composite can be cooled to form an amorphous thermally-bonded polymer layer at 1720052. Therefore, under the dimension restraint, this heatsetting

之後的拉伸製程(stretching operation)，在 l5〇°c 至 250oC 之溫度範圍下執行是較佳的。至於較簡便的拉伸(stretching) 與熱固（heat setting)製程係揭露於美國專利第107,139 號。因此，在本發明之一較佳實施例中，此耐撕裂的密封 結構ίο或者是蓋子結構乃是包括一複合材料膜(film composite) ’其藉由共擠製(coextrusi〇n)製程而形成，故可 包含兩種不同材料之膜層，但卻以一張薄膜的形式顯現。 至於此由共擠製(co extrusion)製程所形成之複合材料 膜(film composite)可分為下列幾種類別，例如為由Dupont Teijin Films of Wilmington, DE·公司所製造之 Melinex®301H，其由一定向之聚合物的頂層12與一熱接 合之聚合物層18所構成。 以上所述之複合材料層係可壓合(laminatecj)而成一強 化之聚合物層（reinforcing scrim layer)20。至於製作此強化 之聚合物層20之材料類型可以為編織(woven)或非編織 (non woven)的纖維材料，其包含聚酯(polyester)。一種非編 織的布（scrim) ’例如為紡紗接合聚g旨產品（SpUn bonded polyester product)，係由 Nashville，TN 公司之 BBA 部門 (division)之BBA過濾法(BBA Filtration)所製成，其名稱為 StarWeb®2253C，其中此聚酯產品之基本(basis)重量為約 18g/m2，且厚度為0.0038英吋。此外，另一種非編織的布 (scrim)，亦由BBA過濾法(BB A Filtration)所製成，其名稱 18 200523111 15192pif.doc 為Reemay^OCH之訪紗接合聚g旨(spun bonded Polyester)，具有一基本(basis)重量為約14g/m2。在本發明 中所使用之非編織的布(scrim)，其基本(basis)重量範圍係 落在5g/m2至l〇〇g/m2之範圍間，而落在10g/m2至20g/m2 之範圍間為較佳。 此外，尤其是當需要較高張力（tensile)等級(level)及/ 或高耐撕裂強度(tear strength)時，亦可使用已編織(woven) 的布(3014111)(例如為二維或三維(打1-(1^1^1^011&1))，其基 本(basis)重量範圍係落在bg/m2至300g/m2之間。此已編 織的布可由任何不同之聚酯(polyester)所構成，其例如包括 但不限定於聚對苯二曱酸乙酯(polyethylene terephthalate， PET)以及聚對荼二曱酸乙二酯（polyethylene naphthalate， PEN) 〇 圖2纟會不為根據本發明較佳貫施例之一種密封結構貼 附於一泡形包裝之示意圖。請參照圖2，对撕裂的密封結 構結構的底面(underside)係貼附於(attached) —容納一產品 21 之泡形包裝(blister type package)22。此泡形容器(blister type container)係藉由一黏著層（adhesive layer)24 而可撕裂 地貼附於聚合物層20之底面(bottomsurface)17。黏著層24 可為一耐溶解(solvent borne)之EVA溶液(solution)，係以 2gr/m2至25gr/m2之間的重量範圍而覆蓋於聚合物層 20(scrim layer)之底面17，其中此較佳的重量範圍係介於 6gr/m2至16 gr/m2之間。至於此覆蓋製程係接續著將聚合 物層壓合於由薄膜加上熱接合層所定向之共擠製 19 200523111 15192pif.doc (co-extruded)的複合物之步驟後才執行乃是較佳的。此外， 亦可使用一对溶解(solvent borne)之聚酯或者是一水黏著 劑(aqueous adhesive)，例如為丙烯酸(acrylic)，EVA 或者是 聚酯等。相對地，此黏著層24也可以擠製於(extruded)此 聚合物層之底面17。 此黏者劑(adhesive)亦可塗佈於容器之外露面(exposed surface)26，此外露面26係可與此密封結構1〇接觸。此黏 著劑亦可藉由在多數個區域印刷(printing)的方式，以作為 一連續層（continuous layer)，其中此印刷方式例如為將此黏 著劑之細小的(thin)粒子(bead)配置於泡形包裝22之蓋子 的周圍，或者是配置於此聚合物(scrim)層之底面上。一般 而言，此黏著劑為一熱活化(heat-activated)黏著劑，或者是 一接觸黏著劑(contact adhesive)。常用於密封泡形包裝或瓶 子(bottle)包裝之設備通常包含由在佛羅里達(Florida)之清 水(Clearwater)地區之KlOckner Medipak有限公司所生產之 設備。 圖3繪示為根據本發明較佳實施例之一種密封結構貼 附於一瓶形容器之示意圖。請參照圖3，在本實施例中， 此密封結構係用以密封瓶形容器（bottle type container)27 之開口（mouth)，此容器例如可放置藥片（piU)或者是膠囊 (capsules)等。在本實施例中，此密封結構係由一大的密封 材料薄片(sheet)所割下成一適當的形狀與尺寸大小，並使 用一黏著劑24’而塗佈於相對於瓶口之底側(un(jerside)而 將此密封結構貼附於此瓶口上。就泡形包裝(blister package) 20 200523111 15192pif.doc 而言，此密封結構例如包含一連續層（continuous layer)或者 是一黏著層（adhesive layer)，以覆蓋於瓶口之上表面。另 外，為了方便將此密封結構自瓶口處移除，此密封結構更 可包含一小的突出標籤(tab)33。 頂面14可包括如圖3所示之印刷標示（printed indicia)23，其例如為商標(logo)、圖像(images)或者是相關 說明（instructions)等。因此，頂層12可具有較佳的可印刷 特性(printability characteristics)。為了改善聚對苯二甲酸乙 酯（polyethylene terephthalate, PET)之墨汁保持（ink retention)特性，由一薄膜複合物(film composite)之聚對苯 二曱酸乙酯(polyethylene terephthalate，PET)膜的一側可藉 由一直列(in-line)凹版塗劑(gravure coater)，並以一底漆材 質(primer material)而被選擇性地覆蓋，以改善對於水基礎 (water-based)與溶劑基礎(solvent_based)之塗層（coating)與 黏著劑(adhesive)的貼附性(adhesion)，故可輕易地於此膜層 之表面上印刷。此印刷底漆(printing primers)包括習知技術 中常見之水聚合物(aqueous polymer)之分散(dispersion)，或 者是丙烯酸(acrylic)、氨基钾酸酯(urethane)、聚酯(polyester) 或其他樹脂(resin)之乳劑(emulsion)或溶劑(solution)等。在 一較佳實施例中，塗層（coating)例如包含至少一硫確聚醋 (sulfopolyester)丙烯酸胺、至少一四塊(terablock)共聚物 (copolymer)樹脂(resin)、至少一丙烯酸胺(acryiamide)/丙稀 酸共聚物(acrylic acid copolymer)或其鹽類等，係揭露於美 國專利第5,985,437號中，其發明者為Chappell·等。在實 21 200523111 15192plf.doc 際應用上，可使用Wilmington, De公司所生產之E. I. Dupont de Nemours機器，而印刷此底塗(primed)之聚酯 膜，稱為 Mylar®854。 根據此密封結構所欲達成之功效，一額外的塗層或塗 膜亦可應用於頂面14上。舉例而言，此塗層或塗膜可包含 隔絕空氣及水蒸氣之阻障層，例如為藉由真空沈積之紹膜 或者是聚合物阻障塗層(polymeric barrier coating)，其中此 聚合物阻障塗層係包含樹脂，例如為由Dow化學公司所製 造之Saran® (—種聚二氣乙烯(PVdC)之樹脂），或者是作 為氣體阻障層之聚乙烯醇(PVA)，次乙基-乙烯醇共聚合體 (EVOH)以及氧化石夕（Si〇x)等。可藉由一水處理製程 (aqueous process)、非水溶劑基礎之製程（non aqueous solvent based process)或者是一無溶劑製程（solventless process)例如為錢鍍等，以塗佈(c〇ating)這些膜層。此外， 此密封結構更可包括多個特殊功用之膜層，例如為特殊保 遵之型式的膜層，包括抗菌膜層(anti-microbial layers)、安 全、防偽造、商標保護之設計，例如為全像攝影之影像 (holographic images)、化學染色(dye)與標記、光化學發光 塗層（luminescent photochemical coatings)等。 在如圖4所示之一較佳實施例中，此密封結構3〇更 可包括一第二結合膜層（combined film/bonding layer)32，其 包括接合層18,與定向膜層12,，以增加此密封結構3〇之 抗撕裂性(tear resistance)。接著，此第二結合膜層32係壓 合於(laminated)強化之聚合物層（scrim layer)20之底面。此 22 200523111 15192pif.doc 外，由於此第二結合膜層32可具有一化學成分⑽⑽― compostion)，使得在不分開這些膜層的情況下，可重複地 利用此完成的密封結構30。 另=，一黏著層（未繪示）亦可覆蓋於此第二結合膜層 32之暴露的表面34,至於此黏著層之組成成分及其應用方 式係與圖2之實施例巾的描述相同，故在此便不再費述。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟f此技藝者，在不麟本發明之精神 和範圍内，當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 圖1繪示為依據本發明較佳實施例之一種多層密封結 構的剖面示意圖。 圖2繪示為根據本發明較佳實施例之一種密封結構貼 附於一泡形包裝之示意圖。 圖3繪示為根據本發明較佳實施例之一種密封結構貼 附於一瓶形容器之示意圖。 圖4繪示為依據本發明較佳實施例之一種密封結構， 其包括一選擇性地附加層(0pti〇nal “仙⑽“ layer)的示意 圖。 【主要元件符號說明】 10 :密封結構 12 :頂層 12’ ·定向膜層 23 200523111 15192plf.doc 14 :頂面 16 :内面 17 :底面 18 :聚合物層 18’ ：接合層 20 :聚合物層 21 ··產品 22 :泡形包裝 23 ··印刷標示 24 :黏著層 24’ ：黏著劑 26 :外露面 27 :瓶形容器 30 ··密封結構 32 :結合膜層 33 ··標籤 34 ··表面The subsequent stretching operation is preferably performed at a temperature ranging from 150 ° C to 250oC. The simpler stretching and heat setting processes are disclosed in US Patent No. 107,139. Therefore, in a preferred embodiment of the present invention, the tear-resistant seal structure, or the lid structure, includes a film composite, which is produced by a coextrusion process. It is formed so that it can contain two layers of different materials, but appears as a thin film. As for the film composite formed by the co extrusion process, it can be divided into the following categories, for example, Melinex® 301H manufactured by Dupont Teijin Films of Wilmington, DE. An oriented polymer top layer 12 is formed with a thermally bonded polymer layer 18. The composite material layer described above can be laminated to form a reinforced scrim layer 20. As for the material type of the reinforced polymer layer 20, it may be a woven or non-woven fiber material, which includes polyester. A non-woven scrim is, for example, a spun bonded polyester product, which is made by the BBA Filtration method of the BBA division of the Nashville, TN company. Named StarWeb®2253C, the basic weight of this polyester product is approximately 18 g / m2 and the thickness is 0.0038 inches. In addition, another non-woven scrim is also made by BB A Filtration. Its name is 18 200523111 15192pif.doc is Reemay ^ OCH's spun bonded Polyester. Has a basis weight of about 14 g / m2. The basis weight of the non-woven scrim used in the present invention ranges from 5 g / m2 to 100 g / m2, and falls from 10 g / m2 to 20 g / m2. The range is better. In addition, especially when higher tension levels and / or high tear strength are required, a woven cloth (3014111) (for example, two-dimensional or three-dimensional) (Type 1- (1 ^ 1 ^ 1 ^ 011 & 1)), its basic weight range is between bg / m2 to 300g / m2. This woven cloth can be made of any different polyester (polyester ), Including but not limited to polyethylene terephthalate (PET) and polyethylene naphthalate (PEN). Figure 2 A schematic diagram of a preferred embodiment of the invention for attaching a sealing structure to a blister pack. Please refer to FIG. 2. The underside of the torn sealing structure is attached—to accommodate a product 21 Blister type package 22. This blister type container is detachably attached to the bottom surface 17 of the polymer layer 20 through an adhesive layer 24. Adhesion Layer 24 may be a solvent-borne EVA solution, ranging from 2gr / m2 to 25gr The weight range between / m2 covers the bottom surface 17 of the polymer layer 20 (scrim layer). The preferred weight range is between 6 gr / m2 and 16 gr / m2. So far, the covering process is continued. It is preferable to perform the lamination of the polymer on a co-extruded composite oriented by a film and a heat-bonding layer 19 200523111 15192pif.doc (co-extruded). In addition, it is also possible to use a For soluble borne polyester or an aqueous adhesive, such as acrylic, EVA or polyester, etc. In contrast, the adhesive layer 24 can also be extruded. The bottom surface of the polymer layer 17. The adhesive can also be applied to the exposed surface 26 of the container, and the exposed surface 26 can be in contact with the sealing structure 10. The adhesive can also be applied by The printing method of a plurality of regions is used as a continuous layer. The printing method is, for example, arranging thin particles of the adhesive around the lid of the blister package 22. Or placed on the underside of this scrim layer on. Generally, the adhesive is a heat-activated adhesive, or a contact adhesive. Equipment commonly used in sealed blister packs or bottle packaging often includes equipment manufactured by KlOckner Medipak, Inc. in the Clearwater area of Florida. FIG. 3 is a schematic diagram of a sealing structure attached to a bottle-shaped container according to a preferred embodiment of the present invention. Please refer to FIG. 3. In this embodiment, the sealing structure is used to seal a mouth of a bottle type container 27. For example, the container can hold tablets (piU) or capsules. In this embodiment, the sealing structure is cut from a large sheet of sealing material into an appropriate shape and size, and is coated on the bottom side opposite to the bottle mouth using an adhesive 24 '( un (jerside) and attach the sealing structure to the mouth of the bottle. In terms of blister package 20 200523111 15192pif.doc, the sealing structure includes, for example, a continuous layer or an adhesive layer ( adhesive layer) to cover the upper surface of the bottle mouth. In addition, in order to facilitate the removal of the sealing structure from the bottle mouth, the sealing structure may further include a small protruding tab 33. The top surface 14 may include, for example, The printed indicia 23 shown in FIG. 3 is, for example, a logo, images, or instructions. Therefore, the top layer 12 may have better printability characteristics. In order to improve the ink retention characteristics of polyethylene terephthalate (PET), a film composite of polyethylene terephthalate (polyethylene terephthalate) One side of a terephthalate (PET) film can be selectively covered with an in-line gravure coater and a primer material to improve the water base. -based and solvent_based coating and adhesion, so it can be easily printed on the surface of this film. This printing primers Including dispersions of aqueous polymers commonly known in the art, or emulsions of acrylic, urethane, polyester, or other resins ) Or solvent, etc. In a preferred embodiment, the coating comprises, for example, at least one sulfopolyester amine acrylate, at least one terablock copolymer resin ), At least one acrylamide / acrylic acid copolymer or its salts are disclosed in US Patent No. 5,985,437, the inventor of which is Chappell. In actual application of 21 200523111 15192plf.doc, the E. I. Dupont de Nemours machine produced by Wilmington, De can be used to print this primer polyester film, called Mylar® 854. Depending on the desired effect of the sealing structure, an additional coating or film can also be applied to the top surface 14. For example, the coating or coating film may include a barrier layer that blocks air and water vapor, such as a film deposited by vacuum deposition or a polymer barrier coating, wherein the polymer barrier coating The barrier coating contains a resin, such as Saran® (a resin of polyvinylidene fluoride (PVdC)) manufactured by Dow Chemical Co., or polyvinyl alcohol (PVA) as a gas barrier layer. -Vinyl alcohol copolymer (EVOH) and oxidized stone (SiOx). These can be coated by means of an aqueous process, a non-aqueous solvent based process, or a solventless process such as coin plating, etc. Film layer. In addition, the sealing structure may further include a plurality of special-purpose film layers, such as a film layer of a special guarantee type, including anti-microbial layers, security, anti-counterfeiting, and trademark protection designs, such as Holographic images, chemical dyeing and marking, luminescent photochemical coatings, etc. In a preferred embodiment shown in FIG. 4, the sealing structure 30 may further include a second combined film / bonding layer 32, which includes a bonding layer 18 and an alignment film layer 12, In order to increase the tear resistance of the sealing structure 30. Next, the second bonding film layer 32 is laminated on the bottom surface of the strengthened scrim layer 20. In addition to this 22 200523111 15192pif.doc, since the second bonding film layer 32 may have a chemical composition (composition), the completed sealing structure 30 can be reused without separating the film layers. In addition, an adhesive layer (not shown) can also cover the exposed surface 34 of the second bonding film layer 32. As for the composition and application method of the adhesive layer, it is the same as that described in the embodiment of FIG. 2 , So I will not go into details here. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and retouching within the spirit and scope of the present invention. The scope of protection of the invention shall be determined by the scope of the attached patent application. [Brief Description of the Drawings] FIG. 1 is a schematic cross-sectional view of a multilayer sealing structure according to a preferred embodiment of the present invention. FIG. 2 is a schematic diagram illustrating a sealing structure attached to a blister pack according to a preferred embodiment of the present invention. FIG. 3 is a schematic diagram of a sealing structure attached to a bottle-shaped container according to a preferred embodiment of the present invention. FIG. 4 is a schematic diagram of a sealing structure according to a preferred embodiment of the present invention, which includes a selective additional layer (optinal “xianyu” layer). [Description of main component symbols] 10: Seal structure 12: Top layer 12 '· Orientation film layer 23 200523111 15192plf.doc 14: Top surface 16: Inner surface 17: Bottom surface 18: Polymer layer 18': Joint layer 20: Polymer layer 21 ·· Product 22: Blister package 23 ·· Printed label 24: Adhesive layer 24 ': Adhesive 26: Exposed surface 27: Bottle-shaped container 30 ·· Seal structure 32: Bonding film layer 33 ·· Label 34 ·· Surface

Claims (1)

15192pif.doc 200523111 十、申請專利範圍： 1·一種密封結構，係適於用以密封一容器的開口，該 密封結構包括至少一耐撕裂(tear resisting)之複合材料層 (composite layer)，包括： 一定向聚合物膜層（oriented polymer film layer)，具有 一頂面與一内面； 一熱接合聚合物層(thermal bonding polymer)，係實質 上地(substantially)共延伸（coextensive)於該定向聚合物膜 層的内面上，其中該熱接合聚合物層具有一厚度，該厚度 係為該定向聚合物膜層與該熱接合聚合物層之一共同接合 厚度之10%至40% ;以及 一強化聚合物層（reinforcing scrim polymer layer)，具 有一内面與一底面，其中該内面係實質上地共延伸 (coextensive)於該熱接合聚合物層，而 該耐撕裂之複合材料層可提供該密封結構較佳的耐 撕裂特性。 2·如申請專利範圍第1項所述之密封結構，其中該定 向聚合物膜層與該熱接合聚合物層之該共同接合厚度係介 於0.00020英吋與〇·〇〇3英吋之間。 3·如申請專利範圍第1項所述之密封結構，其中該定 向聚合物膜層與該熱接合聚合物層以及該強化聚合物層所 構成之該耐撕裂之複合材料層具有一化學成分，其可讓該 耐撕裂之複合材料層毋須分開其膜層就可重複地使用。 4·如申請專利範圍第3項所述之密封結構，更包括一 25 2〇〇52mL 黏著層於該強化聚合物層之該底面上。 5.如申請專利範圍第4項所述之密封結構，其中該黏 著層更具有-化學成分，其可讓該耐撕裂之複合材料層^ 須分開其膜層就可重複地使用。 6·如申請專利範圍第4項所述之密封結構，其中該黏 著層係一熱活化(thermally activated)之黏著層。 7.如申請專利範圍第2項所述之密封結構，其中於該 而才撕裂之複合材料層中之該定向聚合物膜層與該熱接合聚 合物層以及該強化聚合物層係分別包括一合成濃縮聚合物 (synthetic condensation polymer)，其中每一該些合成濃縮 聚合物包括多數個聚合物型式(polymerized form),包括： 一羧酸(carboxylic acid)或者是一羧酸的混合物，以及 一二氨(diamine)或一二氨之混合物，或者是一醇類或一醇 類之混合物，或者是 一 ω-氨基酸(amino acid)，具有超過2個碳原子，或 者是一氨基酸之混合物， 其中該些聚合物之其中之一可作為一整體之聚合 物，而該些聚合物包括： 至少90mol%之該羧酸(carboxylic acid)或者是該羧酸 於該合成濃縮聚合物之混合物的結合總量為相同之羧酸， 至少90mol%之該二氨(diamine)或者是該二氨於該合 成濃縮聚合物之混合物的結合總量為相同之二氨， 至少90mol%之該醇類(diols)或者是該醇類於該合成 濃縮聚合物之混合物的結合總量為相同之醇類，以及 26 200523111 15192pif.doc 至少90mol%之該氨基酸(amino acid)或者是該氨基酸 於該合成濃縮聚合物之混合物的結合總量為相同之氨基 酸。 8·如申請專利範圍第7項所述之密封結構，其中該定 向聚合物膜層包括雙軸定向之聚對苯二甲酸乙酯 (polyethylene terephthalate，PET)。 9·如申請專利範圍第7項所述之密封結構，更包括一 熱活化(thermally activated)之黏著層，配置於該強化聚合物 層之該底面上。 10·如申請專利範圍第3項所述之密封結構，更包括一 泡形包裝(blister package)，貼附於該強化聚合物層之該底 面上。 11·如申請專利範圍第1〇項所述之密封結構，該泡形 包裝係藉由一熱活化附著法(heat activated adhesive)，而可 剝離地(peelably)貼附於該強化聚合物層之該底面上。 12·如申請專利範圍第η項所述之密封結構，更包括 一泡形包裝(blister package)，貼附於該強化聚合物層之該 底面上，其中該泡形包裝包括一表面與一黏著劑 (adhesive),而該表面係適於貼附於該耐撕裂之複合材料 層，且該黏著劑係覆蓋於該表面上。 13·如申明專利範圍苐3項所述之密封結構，其中該定 向聚合物膜層之該頂面及該定向聚合物膜層之該内面的至 少其中之一包括一印刷標誌(printed indica)。 14·如申請專利範圍第3項所述之密封結構，其中該耐 27 2〇〇523mdoc 撕裂之複合材料層更包括一額外的熱接合聚合物膜層 (thermal bonding polymer layer)以及〆額外的聚合物膜 層，其中該熱接合聚合物膜層係配置於該強化聚合物層之 該底面上，而所有之該些聚合物膜層皆具有一化學成分 (chemical compostion)，其可讓該些聚合物膜層毋須分開其 膜層就可重複地使用。 15·如申請專利範圍第3項所述之密封結構，更包括一 谷器，其具有一開口，其中該密封結構係可剝離地貼附並 密封該容器之該開口。 ’更包括至15192pif.doc 200523111 10. Scope of patent application: 1. A sealing structure suitable for sealing the opening of a container. The sealing structure includes at least a composite layer of tear resisting, including : An oriented polymer film layer having a top surface and an inner surface; a thermal bonding polymer layer that is substantially coextensively extended to the oriented polymer The inner surface of the film layer, wherein the heat-bonded polymer layer has a thickness that is 10% to 40% of the joint thickness of the oriented polymer film layer and one of the heat-bonded polymer layers; and a reinforcement A polymer layer (reinforcing scrim polymer layer) has an inner surface and a bottom surface, wherein the inner surface is substantially coextensive to the thermally bonded polymer layer, and the tear-resistant composite material layer can provide the seal Structure with better tear resistance. 2. The sealing structure as described in item 1 of the scope of the patent application, wherein the common joint thickness of the oriented polymer film layer and the heat-bonded polymer layer is between 0.00020 inches and 0.003 inches. . 3. The sealing structure according to item 1 of the scope of the patent application, wherein the tear-resistant composite material layer composed of the oriented polymer film layer, the heat-bonded polymer layer and the reinforced polymer layer has a chemical composition It allows the tear-resistant composite material layer to be reused without having to separate its film layer. 4. The sealing structure described in item 3 of the scope of the patent application, further comprising a 25,002,05 mL adhesive layer on the bottom surface of the reinforced polymer layer. 5. The sealing structure according to item 4 of the scope of patent application, wherein the adhesive layer further has a -chemical composition, which allows the tear-resistant composite material layer to be reused without separating its film layer. 6. The sealing structure according to item 4 of the scope of the patent application, wherein the adhesive layer is a thermally activated adhesive layer. 7. The sealing structure according to item 2 of the scope of the patent application, wherein the oriented polymer film layer, the thermally bonded polymer layer, and the reinforced polymer layer in the composite material layer that has only been torn apart each include A synthetic condensation polymer, each of which includes a plurality of polymerized forms, including: a carboxylic acid or a mixture of a carboxylic acid, and a Diamine or a mixture of diamines, or an alcohol or a mixture of alcohols, or an omega-amino acid, having more than 2 carbon atoms, or a mixture of one amino acid, where One of the polymers may be considered as a whole polymer, and the polymers include: at least 90 mol% of the carboxylic acid or the combined total of the carboxylic acid in the synthetic concentrated polymer mixture The amount of the same carboxylic acid, at least 90 mol% of the diamine or the combined amount of the diamine in the synthetic concentrated polymer mixture is the same diamine, at least 90 mol% The alcohols (diols) or the total amount of the alcohols in the synthetic concentrated polymer mixture is the same, and at least 90 mol% of the amino acid or the amino acid of 26 200523111 15192pif.doc The total combined amount of the mixture of synthetic concentrated polymers is the same amino acid. 8. The sealing structure according to item 7 in the scope of the patent application, wherein the directional polymer film layer comprises biaxially oriented polyethylene terephthalate (PET). 9. The sealing structure described in item 7 of the scope of patent application, further comprising a thermally activated adhesive layer disposed on the bottom surface of the reinforced polymer layer. 10. The sealing structure described in item 3 of the scope of patent application, further comprising a blister package attached to the bottom surface of the reinforced polymer layer. 11. The sealing structure according to item 10 of the scope of patent application, wherein the blister package is peelably attached to the reinforced polymer layer by a heat activated adhesive method. On the bottom. 12. The sealing structure according to item η of the scope of patent application, further comprising a blister package attached to the bottom surface of the reinforced polymer layer, wherein the blister package includes a surface and an adhesive The surface is adapted to be attached to the tear-resistant composite material layer, and the adhesive is covered on the surface. 13. The sealing structure according to item 3 of the declared patent scope, wherein at least one of the top surface of the oriented polymer film layer and the inner surface of the oriented polymer film layer includes a printed indica. 14. The sealing structure described in item 3 of the scope of the patent application, wherein the composite material layer that is resistant to 270,200,523mdoc further includes an additional thermal bonding polymer layer and an additional thermal bonding polymer layer. A polymer film layer, wherein the thermally bonded polymer film layer is disposed on the bottom surface of the reinforced polymer layer, and all of the polymer film layers have a chemical compostion, which allows the The polymer film layer can be reused without having to separate its film layer. 15. The sealing structure according to item 3 of the scope of patent application, further comprising a trough with an opening, wherein the sealing structure is releasably attached to and seals the opening of the container. ’Even more to 16如申請專利範圍第3項所述之密封結構 少一特殊功能(special function)之膜層。 2816 The sealing structure as described in item 3 of the scope of patent application has one special function film layer. 28
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